Hui Cheng - Bridgewater NJ, US Zhigang Fan - Webster NY, US Ying-wei Lin - Penfield NY, US
Assignee:
Xerox Corporation - Stamford CT
International Classification:
H04N 1/46
US Classification:
358 328, 358 33, 382100
Abstract:
A watermarked image generator includes a watermark data source that inputs watermark data to a watermark embedding device. The watermark embedding device halftones the input image to generate the output image made of 2×2 binary patterns, the 2×2 binary patterns forming the watermarks embedded in the output image. The watermark embedding device includes a tri-level error diffusion generator that performs tri-level error diffusion on the input image by halftoning the input image into black, white and 50% gray. A plurality of halftoning circuits successively replace each pixel of the halftoned input image with one of a plurality of the 2×2 binary patterns. The one of the plurality of 2×2 binary patterns corresponds to at least one respective bit of the watermark data when a pixel of the halftoned image data is 50% gray. The watermark data can be segmentation map data of the input image.
Hui Cheng - Bridgewater NJ, US Ying-wei Lin - Penfield NY, US Stuart A. Schweid - Pittsford NY, US
Assignee:
Xerox Corporation - Stamford CT
International Classification:
G66K 9/40
US Classification:
382254, 382260, 382275, 358 327, 358463
Abstract:
An annular window-shaped structuring element is provided for image processing to remove speckles from a scanned image. The window-shaped structuring element is composed of two differently sized squares sharing the same geometric center-point. The pixel to be analyzed with the structuring element is at the center-point. The structuring element is used in a method to remove speckles from binary, grayscale, and/or color images by first eroding the image, detecting speckles relative to other pixels in the image, and removing declared speckles. The method may additionally include a halftoning module to protect halftone images.
Method And Apparatus For Windowing And Image Rendition
Hui Cheng - Bridgewater NJ, US Ying-wei Lin - Penfield NY, US
Assignee:
Xerox Corporation - Stamford CT
International Classification:
G06T 15/00
US Classification:
345639, 382173
Abstract:
Systems and methods are presented for processing and rendering image data during a single pass through the image data. A method includes loading scanlines of image data into a rolling band buffer, performing a windowing technique on the image data, and determining if a class change was experienced by any window having a portion in an output scanline of the buffer. The method further includes processing image data in the output scanline for a window portion that experienced a class change, using a blended rendering algorithm. If no class change is detected, the method includes processing image data in the output scanline for the window portion using a class-based rendering algorithm. The method optionally includes rendering processed image data for the output scanline to a rendering device. According to other features, an apparatus includes a rolling band buffer, a windowing processor, class-based rendering algorithms, and a blended rendering algorithm.
Video Registration Based On Local Prediction Errors
A processed (e. g. , captured) video sequence is temporally, spatially, and/or histogram registered to the corresponding original video sequence by generating, for each set of one or more processed frames, a mapping from a selected set of one or more original frames to the processed set, wherein (1) each selected set depends on the selected set corresponding to a previous processed set, (2) each mapping minimizes a local prediction error between the original set and the corresponding processed set, and (3) the accumulated prediction error for the entire processed video sequence is minimized.
System And Method For Mission-Driven Visual Information Retrieval And Organization
The present invention provides a virtual data collection system and method that provides an image analyst with full-control of the image, including the ability to retrieve and reorganize information from an existing video database of images. The system provides for the search and retrieval of information from previously collected images, and reorganize them to meet new or revised mission objectives. The system also enables quick access of the “right” information through virtual data collection from the existing video database.
Method And System For Segment-Based Optical Flow Estimation
Jiangjian Xiao - Plainsboro NJ, US Hui Cheng - Bridgewater NJ, US
Assignee:
Sarnoff Corporation - Princeton NJ
International Classification:
G06K 9/00 H04N 5/30
US Classification:
382107, 348162
Abstract:
The methods and systems of the present invention enable the estimation of optical flow by performing color segmentation and adaptive bilateral filtering to regularize the flow field to achieve a more accurate flow field estimation. After creating pyramid models for two input image frames, color segmentation is performed. Next, starting from a top level of the pyramid, additive flow vectors are iteratively estimated between the reference frames by a process including occlusion detection, wherein the symmetric property of backward and forward flow is enforced for the non-occluded regions. Next, a final estimated optical flow field is generated by expanding the current pyramid level to the next lower level and the repeating the process until the lowest level is reached. This approach not only generates efficient spatial-coherent flow fields, but also accurately locates flow discontinuities along the motion boundaries.
Method And Apparatus For Providing Reduced Reference Techniques For Low Frequency Watermarking
Jeffrey Lubin - Princeton NJ, US Hui Cheng - Bridgewater NJ, US
International Classification:
G06K 9/00
US Classification:
382100, 283113, 358 328, 713176
Abstract:
A method and apparatus for using a reference in a watermarking application is disclosed. Watermarked content and a reduced resolution reference are registered such that registration parameters are calculated. The watermarked content is processed using the registration parameters. A watermark is recovered using the processed watermarked content and the reduced resolution reference.
Hui Cheng - Bridgewater NJ, US Darren Butler - Philadelphia PA, US
Assignee:
Sarnoff Corporation - Princeton NJ
International Classification:
G06K 9/34
US Classification:
382176, 382171, 382173, 382243, 382294, 358462
Abstract:
A method for transforming Video-To-Text is disclosed that automatically generates text descriptions of the content of a video. The present invention first segments an input video sequence according to predefined semantic classes using a Mixture-of-Experts blob segmentation algorithm. The resulting segmentation is coerced into a semantic concept graph and based on domain knowledge and a semantic concept hierarchy. Then, the initial semantic concept graph is summarized and pruned. Finally, according to the summarized semantic concept graph and its changes over time, text and/or speech descriptions are automatically generated using one of the three description schemes: key-frame, key-object and key-change descriptions.
Database Administrator III ( SQL Server & ORACLE & Sybase) at Sysco
Location:
Houston, Texas
Industry:
Retail
Work:
Sysco - Houston, Texas Area since May 2011
Database Administrator III ( SQL Server & ORACLE & Sybase)
Sysco Jan 2009 - May 2011
Sr. Database Administrator ( SQL Server & ORACLE & Sybase)
Sysco Apr 2006 - Jan 2009
Sr. Database Administrator (SQL Server & Sybase)
Weatherford Jul 2005 - Apr 2006
Sr. Database Developer/Data Architect (SQL Server /.Net)
Williams Company Jan 2003 - Jun 2005
System Analyst Staff/Development DBA ( ORACLE)
Education:
North China Electric Power University
Bachelor of Computer Science and Technology, Computer Science and Technology
University of houston
Master of Science (MS), Computer Science
License Records
Hui Shan Cheng
License #:
26116 - Active
Issued Date:
Jan 30, 2008
Renew Date:
Dec 1, 2015
Expiration Date:
Nov 30, 2017
Type:
Certified Public Accountant
Googleplus
Hui Cheng
Work:
Platts (2011) Steel Business Briefing - Deputy General Manager China (2007-2011) Steel Business Briefing - Sales and Marketing Manager Shanghai (2005-2007) Steel Business Briefing - Business Development for China (2004-2005)
Education:
Cranfield School of Management - MBA, University of Abertay Dundee - IT
Hui Cheng
Hui Cheng
Education:
University of Adelaide
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